Like anything else, if you look at your bike as a whole, it will seem like an impossible job to optimize it, but breaking it down into systems and trying to optimize each system, will organize and simplify the task.
Thus;1) Engine - bottom end system, top end system
2) Transmission, clutch, kick start mechanism
3) Fuel - carburetor, air and fuel filtration, fuel tank, tank valve
4) Brakes - linkages, shoes
5) Electrical - lights, ignition, storage (battery), switches and controls
6) Sheet metal and cosmetics
7) Tyres
Probably others as well, but then you analyze what needs to be done to perfect each system and what spares and tools need to be on hand.
Gradually you can come to grips with the beast and it becomes less confusing. Also you can spread it all over time so costs can be handled. Starting with the most critical for general operation, but also this can be things that are bothering you about the bike.
Problem is, we read all the horror stories and it all seems to pile up until the bike seems of poor quality and no good at all. I don't think this is the case. There are thousands of satisfied owners who will swear by them as being good and reliable.
We have a medical book with all the ills of mankind in it, and my son always refused to read it because he got to thinking everything about him was going wrong. We tend to do the same with our bikes.